Across
- 3. the point where a lever rests
- 4. a surface of which one end is higher than the other; a rising or falling slanted surface
- 6. a bar resting on a pivot, used to help move a heavy load with one end when pressure is applied
- 7. a rod through the center of two wheels
- 8. a round disk
- 10. the resistance that one surface or object encounters when moving over or against another surface
- 11. a piece having one thick end and tapering to a thin edge
Down
- 1. Plane a plane which angle is sloped at an inclining angle.
- 2. any of the six basic mechanical devices used for applying force
- 4. a raised helical thread running around it and a slotted head used to join things together
- 5. a wheel that carries a flexible rope on its rim
- 9. a push or a pull
- 12. the force that attracts all objects toward the center of the Earth